In Cocker Spaniels, Black Coat Color (B) Is Dominant Over

question 48

Multiple Choice

In cocker spaniels, black coat color (B) is dominant over red (b) , and solid color (S) is dominant over spotted (s) . If Bb Ss were crossed with Bb ss , the chance that a black, solid individual would be produced is

• A) 3/16.
• B) 1/3.
• C) 9/16.
• D) 3/8.
• E) 1/16.

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Definitions:

Thymine

A nitrogenous base found in DNA, paired with adenine, and is one of the four nucleotide bases in DNA.

Nucleosomes

Fundamental subunits of chromatin, composed of a segment of DNA wound around a core of histone proteins, facilitating DNA packing in the cell nucleus.

Histones

Proteins that package and order DNA into structural units called nucleosomes, playing key roles in gene regulation.

Purine

A type of nitrogenous base found in DNA and RNA, including adenine and guanine, which pairs with pyrimidine bases in the genetic code.